Traveling back anchor for power hoes



Nov. 5, 1929.

w. w. SAYERS 1,734,882

TRAVELING BACK ANCHOR-I(R POWER B088 2 Sheets-Sheet 1 Filed March 27. 1 925 Nov. 5, 1929. w w, SA R 1,734,882

TRAVELING BACK ANCHOR FOR POWER HOES Filed March 27. 1925 2 Sheets-Sheet 2 f' /9 2/ v Q42 9 Q0 25 25 g 5 /z 35 29 v l I 1-1 I /4 4i Q5 /4 intentional or accidental movement.

' mote from the operators station.

Patented Nov. 5, 1929 UNITED STATES IPATENT OFFICE WILLIAM W. SAYERS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO LINK-BELT v COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS TRAVELING BACK. ANCHOR FOR POWER HOES application filed March 27, 1925. Serial No. 18,930.

The invention relates to mechanisms or systems for handling coal and similar material and particularly to mechanisms or systems of the type in which the coal or other material is engaged, transported and dumped by means of a scoo or hoe actuated by cables. In systems 0 this type it is customary to operate t e hoe by means of two cables, one extending more or less directly to a power actuated driv ing drum, and the other of which extends over one or more sheaves, located at points re- From the sheaves the cable extends back to another driving drum at the operators station. By

means of the two drums the operator can cause the hoe to be moved in either direction and, by suitably adjusting and controlling the hoe, material can be transported either toward or from the operators station as desired.

In order to cover a sutficently large area provision is made for moving the remotely located sheaves from time to time and different means for supporting the sheaves have been proposed and have been used. In somecases a series of fixed posts has been provided along the edge of the area to be covered by the hoe and the back sheaves have been manually moved from post to post as required. In other cases a railroad track has been laid along the boundary of the area to be covered and a car has been provided to travel on this track. The back sheaves were mounted on the car, and it was thus more convenient to move them than when the sheaves were secured to fixed posts.

A car traveling on a fixed track has certain important disadvantages and limitations. The car is confined to a fixed path of travel and it is very difficult and expensive to increase or decrease or modify the area which is included in the range of travel of the hoe. The principal object of the present invention is to provide a traveling back anchor for a power hoe system which is so constructed that it can be conveniently mo ed to any desired lo-' cation and then securely held against any un- Other objects of the invention will be apparent from the following specification and claim.

In the accompanying drawings I have coal handling system, having incorporated therein a traveling back anchor embodying the invention.

Fig. 2 is a perspective view of the traveling back anchor. I I

Fig. 3 is a plan view. Fig. 4c is a side view. Fig. 5 is an end View. I Referring particularly to Fig. 1 of the drawings, 1 represents an operators station which is conveniently located with respect to the area to be covered. 2 represents a power hoe of any usual or preferred construction and adapted to be controlled by means of cables 3 and 4. The cable 3 is shown as extending to a winding drum at the operators station, its direction being changed by a sheave at 5. The cable i extends over one or more sheaves carried by a movable cart, and from the back sheaves the cable extends over another sheave at 5 to another winding drum at the operators station 1.

The details of the mechanism for supplying and receiving the coal constitute no part of coal from bin 9 is discharged onto the ground through a chute 10. In order to prevent an undue accumulation of 0021']. under the chute 10, the power hoe is used to distribute the coal over a relatively wide area. When the coal is to be reclaimed from the storage area it is delivered to another hopper 11 from which it can be conveyed to the elevated storage bin 9. The car 6 is shown in detail in Figures 2 to 5. As illustrated the car comprises a main frame having side members 12, 12 and end members 13, 13. Four ground engaging wheels 14, 14 are provided, these being mounted respectively on axles 15, 15. Preferably as shown most clearly in Fig. 5, each axle 15 is connected with the frame for a movement about a vertical axis, a suitable fifth wheel structure 16 being provided for this purpose. Connected with each axle is a tongue 17 having an eye 13 by meansof which the car can be pulled. 1

Mounted on the car are two similar sheaves 19, 19. These are carried by levers 20, 20 which are horizontally pivoted at 21, 21 to brackets 22, 22, which in turn are vertically pivoted to plates 23, 23 secured to the car. Preferably as shown the levers 20, 2O carry adjustable counterweights 24, 24.

In order that the car may have increased weight to assist in keeping it from being overturned, I provide a heavy weight which is preferably in the form of a concrete block 25. This block is supported directly on the main frame of the car, and the before-mentioned plates 23, 23 are secured to the block.

In order to further assist in preventing the car from being overturned by the pull of the cable and to prevent its being moved bodily along the ground by the pull of the cable, various holding devices are provided. Extending diagonally'downward at one side of the car are braces 26, 26. These braces carry ground engaging shoes 27, 27. Preferably each brace is pivotally connected at its upper inner end with the frame of the car and is pivotally connected at its outer lower end with its corresponding shoe. As shown most clearly in Fig. 5, each shoe 27 is provided with a downward projecting blade 28 which is adapted to penetrate the ground.

Preferably in order to more securely hold the shoes 27 the end frame members of the car 13, 13 are extended and carry screws 29, 29 which engage the respective shoes 27, 27 and which engage with fixed nuts on the frame members 13, 13. The screws can be turned by means of hand or wheels 30, 30. The screws 29, therefore, serve not only as means for either raising or lowering the'shoes,27, 27, but also as vertical adjusting means therefor. Preferably as shown the end members 13, 13

of the frame are braced by means of diagonal V braces 31, 31 and by means of a longitudinal connecting member 32. I

The wheels 14, 14: are formed with relatively deep annular flanges 33, 33 which enter the ground and assist in preventing the car from being slid sidewise. In order to also assist in preventing the car from being unintentionally or accidently moved endwise, the. tongues 17, 17 are provided with blades 34:, 34 which can be forced into theground when the tongues are lowered as shown by dotted lines in Fig. 4.

the surface of the ground, and with the blades 28, 2S and 3a, 34: entering the ground, the car is very securely held against turning over and against horizontal bodily movement. Preferably the car isv located approximately at right angles to the line of pull, as its resistance to movement in a lateral direction is somewhat greater than its resistance to movement in a longitudinal direction. In many cases the resistance ofiered against movement is increased by turning one pair of wheels at an angle as indicated by dotand-dash lines in 3. In other cases it may be desirable to set both pairs of wheels at angles.

When it is desired to move the car to a new position the shoes 27, 2'? are lifted and also the tongue 17, 17 with the blades 34-, 34. The car can then be easily moved either manually or by means of a small tractor.

From the foregoing description it will be clear that a traveling back anchor embodying my invention is free from the objections which are incidental to a car traveling on. rails. The car can be set at any desired angle, usually approximately at a right angle to the line of the cables so as to resist lateral move ment. A car mounted on rails must obviously set parallel with the track with the result that under some conditions the cables pull the car along the track. The car can be easily and quickly moved to any desired position, either close to or remote from the feeding and discharging station; and it can be easily and securely held in any position to which it may be moved.

It will be understood that when the term hoe is usedherein it is intended to include other similar devices such as drag scrapers which are adapted to be used with traveling back anchors of the type described.

-While l have shown a relatively simple construction which is adapted to be moved by power applied externally, it will be understood that the invention in its broader as pects is not so limited and that the invention may be embodied in cars of other and more elaborate types.

What I claim is: v

The combination in a traveling back anchor for power hoes, of a weighted supporting car having tractive means arranged to travel directly upon the ground and to engage the same against lateral movement; an outboard frame at one side of the car; .bracespivoted to the frame for up and down oscillation;

WELLIAM' W. SAYERS. 

